WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 661 
Bracts abruptly acuminate. 
Tall shrub, 1 meter high or more; leaves narrowly 
elliptic. ........0.. 2022-22 e eee eee eee ee eee 8. C. linifolius. 
Low plants, 20 to 40 cm. high; leaves linear or fili- 
form. 
Leaves linear; heads long-pedunculate, sub- 
tended by very short bracts............. 9. C. greenet. 
Leaves filiform, heads short-pedunculate or 
sessile, subtended by long bracts...-.... 10. C. filifolius. 
Plants tomentose, at least on the young branches and in the 
axils of the leaves. 
Bracts long-acuminate, with spreading tips..........-.-- ll. C. newberryt. 
Bracts obtuse or acute, not acuminate, appressed. 
Branches permanently white-tomentose. 
Plants tall, about 1 meter high, with erect 
branches; leaves permanently tomentose.12. C. latisqgwameus. 
Plants low, 30 cm. or less, with spreading 
branches; leaves soon glabrate.......... 13. C. formosus. 
Branches and leaves soon glabrate or at least the 
branches never permanently tomentose. 
Leaves permanently tomentose on both sur- 
faceS.. 2... 2222 ee eee ee eee eee eee eee eee 14. C. pulcherrimus. 
Leaves glabrate in age. 
Bracts glabrous; lobes of the corolla spread- 
ing in age; plants much branched...15. C. graveolens. 
Bracts villous-ciliate; lobes of the corolla 
erect; plants sparingly branched....16. C. confinis. 
1. Chrysothamnus bigelovii (A. Gray) Greene, Erythea 3: 102. 1904. 
Linosyris bigelovti A. Gray, U. 8. Rep. Expl. Miss. Pacif. 4: 98. 1856. 
Bigelovia bigelovit A. Gray, Proc. Amer. Acad. 8: 642. 1873. 
Type LOCALITY: ‘Hills and arroyos, Cienegella, above Albuquerque,’’ New Mexico. 
Type collected by Bigelow in 1853. 
RanGeE: Southern Colorado and northern New Mexico. 
New Mexico: Carrizo Mountains; Tunitcha Mountains; Farmington; Stinking 
Lake; Laguna; Zuni Valley; Moreno Valley; Pecos; Horse Camp; Clark; Embudo; 
Albuquerque; Santa Fe; San Augustine Plains. Dry plains and hills, in the Upper 
Sonoran Zone. 
2. Chrysothamnus vaseyi (A. Gray) Greene, Erythea 3: 96. 1894. 
Bigelovia vaseyi A. Gray, Proc. Amer. Acad. 12: 58. 1876. 
Type Locauity: Middle Park, Colorado. 
Rance: Wyoming and Utah to Colorado and New Mexico. 
New Mexico: Dulce; Stinking Lake; Moreno Valley; Chama. Low hills and val- 
leys, in the Upper Sonoran and lower part of the Transition zones. 
8. Chrysothamnus depressus Nutt. Journ. Acad. Phila. II. 1: 171. 1847. 
Bigelovia depressa A. Gray, Proc. Amer. Acad. 8: 643. 1873. 
Tyre Locairy: ‘‘In the Sierra and Upper California.” 
Rance: Colorado to northern New Mexico. 
New Mexico: Tunitcha Mountains; Sandia Mountains; Dulce. Dry hills and 
plains, in the Upper Sonoran and lower part of the Transition zones. 
A low shrub, 15 to 20 cm. high, forming dense clumps. 
